i`d just like to point out that at the bottom of each froum there is a forum jump box to jump between forums etc. there is a go button next to it which is never used because the combobox is using the on change even so the go button is unessacry.
scroots
....unless the user has javascript disabled (at least I assume thats the idea)
If I read a post and end up at the bottom of the page I can just click "go" to go back to the main page for that forum. I find that useful.